发明申请
US20070077413A1 Low dielectric loss tangent-resin varnish, prepreg, laminated sheet, and printed wiring board using the varnish 失效
低介电损耗切线树脂清漆,预浸料,层压板和使用清漆的印刷线路板

Low dielectric loss tangent-resin varnish, prepreg, laminated sheet, and printed wiring board using the varnish
摘要:
There is provided a varnish of a low dielectric loss tangent resin composition which is low in viscosity and excellent in storage stability. The varnish of a low dielectric loss tangent resin composition contains a thermosetting monomer (A) having a weight average molecular weight of not more than 1,000, a high polymer (B) having a weight average molecular weight of not less than 5,000, a halogen flame-retardant agent (C), a silicon dioxide filler (D), and an organic solvent (E). The average particle diameter of each the components (C) and (D) is in the range of 0.2 to 3 μm.
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